Grafting templar-grade psionic appendages to them increased their psionic abilities and combat potential. The Dominion sought to mass produce these creatures in preparation for conflict against the zerg and protoss. They would be controlled by neural conditioning and neural inhibitors.

The project came to an end, with the sole existing specimen, Gestalt Zero, breaking free of his neural inhibitor and working with the protoss.[1]

↑Chris Metzen, Medievaldragon. 2009-08-17. Starcraft II Single Player Hands On: Chris Metzen Interview, "I think that one, for now, is kind more of a one-off. I don’t think there’s any plans to follow up on that theme anytime soon in terms of the game itself, in terms of the game story. But I dig that story a lot that I think it’s more of just a really cool story by itself." Blizzplanet. Accessed 2010-09-09.